SEA → LGBSeattle to Long Beach

live

Direct flights from Seattle (SEA) to Long Beach (LGB): 13 nonstop departures observed each week across 2 airlines. 88% of the last 8 operated flights arrived within 15 minutes of schedule. The median arrival is 20 minutes early. No cancellations were recorded across the 8 tracked flights. The nonstop covers 1,555 km, an estimated 2 hours 30 minutes in the air. Measured by Pro Flight Search from live flight boards at Seattle and Long Beach. Updated 18 October 2026 at 06:47 UTC.

SEA Seattle heavy · +30
LGB Long Beach smooth · +0
1,555 km · ~2h 30m est.
dep bank 09:05–18:1613x weekly
Runs reliable · 2 airlines · 13x weekly · nonstop
88% on time

of the last 8 operated SEA → LGB flights arrived within 15 minutes

Median arrival delay is −20 min. 0 of 8 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−20 minacross the last 8 operated legs
Flight time~2h 30mestimated from route distance
Weekly departures13x2 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Alaska AirlinesSouthwest Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Alaska AirlinesAS83% on time

Flights AS717 11:23 daily · AS1310 18:16 daily

Southwest AirlinesWN

Flights WN3778 09:05 Su · WN3567 10:30 Mo Th Fr · WN1193 11:00 Tu We

History

operated legs · board outcomes
10-17AS1310arrived−21
10-17AS717arrived−20
10-16AS1310arrived−20
10-16AS717arrived+19
10-16WN3567arrived−10
10-15AS1310arrived−10
10-15AS717arrived−25
10-15WN3567arrived−26

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
SEASeattle +30 min heavy 🌤 clear · NNE 4 kt Full SEA delay board →
LGBLong Beach +0 min smooth 🌤 clear · N 0 kt Full LGB delay board →

Weather lens

Current conditions put the pressure at LGB: 39% odds of a 15+ minute delay and around +7 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Seattle to Long Beach route actually runs

Pro Flight Search records official board updates for nonstop SEA to LGB flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Seattle (SEA) to Long Beach (LGB) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/SEA-LGB
How we measure this →

SEA to LGB questions

Is SEA–LGB running on time right now?

Mostly on schedule. The departure side at SEA is the weaker end, route health score 80/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on SEA–LGB?

Operators schedule morning departures around 09:05 and evening departures around 18:16 from SEA. Earlier flights typically land before destination-airport delays accumulate later in the day; check the LGB delay card to confirm conditions when you'd arrive.

How long is the flight from SEA to LGB?

Great-circle distance is 1,555 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 140–163 min gate-to-gate on this route.

How often does SEA–LGB fly?

2 carriers operate this route, around 20 flights a week between them. Compare carrier days and times in the airline list above.